Review the Research Question(s) Outlined in Your Test Plan

If after reviewing these, you have a difficult time ascertaining what data to collect, regard that as an important message. More often than not, it means that you need to clarify the research question(s) to make them more specific This may require reinterviewing the designers and developers and educating them as well. 6
Decide What Type of Information to Collect
Match the type of data you'll collect to a problem statement of the test plan. Figure 8-5 shows several matchups of problem statements with data collected.